How Can I Pretty Print Variables in Go?
Pretty Printing Variables in Go
Ruby's awesome_print function provides a convenient way to format and print variables. However, Go does not have a built-in equivalent. So, let's explore a couple of alternatives.
Using Printf:
The Printf function takes a format string as its first argument. By specifying the #v format for the variable, you can print its value in a human-readable format.
x := map[string]int{"a": 1, "b": 2} fmt.Printf("%#v", x)
This will print the following output:
map[string]int{"a":1,"b":2}
However, this format does not provide indentation or line breaks.
Using json.MarshalIndent:
To obtain a more visually appealing format, you can use json.MarshalIndent. This function takes a value as input and returns its JSON representation with customizable indentation and line breaks.
x := map[string]interface{}{"a": 1, "b": 2} b, err := json.MarshalIndent(x, "", " ") if err != nil { fmt.Println("error:", err) } fmt.Print(string(b))
This will print the following output:
{ "a": 1, "b": 2 }
json.MarshalIndent is a suitable alternative to awesome_print for pretty printing variables in Go. It allows for customization of the indentation and line breaks, resulting in a visually pleasing output.
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